Campbell, Michael J. Medical statistics : a textbook for the health sciences / Michael J. Campbell, David Machin, Stephen J. Walters. - 4th ed. - Chichester : Wiley, 2007 - xii, 331 p. : ill. ISBN: 9780470025192 Subjects--Topical Terms: Medical statisticsMedicine--Research--Statistical methods LC Class. No.: R853.S7 CAM 2007